[compiler-rt] [asan][Windows] Add additional wcs* interceptors (PR #66128)

[Vitaly Buka via llvm-commits]

================
@@ -279,6 +279,25 @@ uptr internal_wcsnlen(const wchar_t *s, uptr maxlen) {
   return i;
 }
 
+wchar_t* internal_wcscpy(wchar_t* dst, const wchar_t* src) {
----------------
vitalybuka wrote:

If you move this into a separate patch, feel free to reorder those as well.

https://github.com/llvm/llvm-project/pull/66128